JPEG Trigger
Description: The JPEG Trigger interfaces with the LinkSprite JPEG Color Camera
to simplify picture taking. To take a picture, all you have to do is
pull one of three digital pins to ground (D2, 3 or 4), or pull one of
three analog pins to 5V (A0, 1 or 2). The on-board Arduino compatible
ATmega328 is programmed to handle all the communication with the JPEG
camera and the SD card.
The default firmware requires that a FAT16 formatted microSD card be
inserted into the microSD socket. After you turn the board on, the
status LED will turn on signifying the board is ready to be triggered.
If the LED starts blinking, the SD card failed to initialize and you
should make sure it's been formatted correctly.
Once the camera is triggered the board will capture a JPEG image and save it to the SD card. The file will be saved with a simple 3 digit number which is increment each
time a picture is captured. While this happens, the status LED will
start blinking. The camera can not be triggered again until the
board finishes saving the current picture. After the JPEG Trigger has
finished recording the image, the board will go back into the ready
state and the status LED will go back to being solid. Each picture taken
is saved as an individual 320x240 JPEG file. The files will actually
carry the '.txt' extension, but they are actually JPEG encoded, simply
change the file extension to '.jpg' in order to view them.
Power on the JPEG Trigger is regulated to 3.3VDC, and the on-board JST
connector allows you to power the board via one of our LiPo batteries.
There is also a 6-pin header on board which mates with our FTDI Basic Breakout board for debugging or other purposes.
Note: This product does not come with the JPEG Color Camera or an SD card, you'll need to purchase those items separately.
Note: Boards with the new firmware (below) will save
pictures as '.jpg' files with the following format: "[name of
trigger]###.jpg". If your board saves files as '.txt' they are still
jpeg encoded, you simply need to change the extension, but if you like
you can download the new source sketch and upload it to your board using
the 'Arduino 5V/16Mhz w/ AtMega328' board profile.
Documents:
|